Error Messages; Installation - Zehnder Rittling ComfoSense CH Manual

3.

Error messages

When the filters must be cleaned or
replaced the text says FLTR, INT or
FLTR, EXT*. Clean or replace the filters as
described in the manual of the ventilation
unit.
In event of a malfunction in the ventilation
unit, the text says ERROR, and the
corresponding malfunction code.
The meaning of the displayed malfunction
code and how to solve the problem can be
found in the manual of the ventilation unit.
The following malfunction codes only
appear on the device:
Code Description
FLTR, INT Internal Filter is dirty.
FLTR, EXT External Filter is dirty.
COMM, No communication between
ERROR the ventilation unit and the
device.
Resetting FLTR, INT
1. Press OK to enter the reset menu.
2. Press or
3. Press OK to confirm. The text says
DONE for 2 seconds. The menu is
automatically closed.
Resetting FLTR EXT
After cleaning or replacing the external
filter as mentioned in the external filter
manual the malfunction code will reset
itself automatically.
Resetting error messages
1. Press MENU.
2. Press OK.
* Only available if the mentioned
function is connected.
** not supplied.
to choose OK.
4.

Installation

Disconnect the ventilation unit
from the main power before
installing the device.
Always follow
regulations.
The letters mentioned in this
chapter refer to the installation
figures (fig. 1, 2 or 3 ) at the
back of this document.
1. If ordered: Attach the wall-mounting
casing I with the plugs H and screws
G to the wall.
2. Fasten the wall frame A with the
screws F** on the wall, wall-mounting
casing I or mounting plate**.
3. Put the communication cable through
the wanted design frame X and
resize window D
4. Connect the communication cable
between the ventilation unit and the
device as shown in fig. 4 at the back
of this document.
The cable requirements are:
Minimum 4x0.25mm
(AWG 24)
Maximum 4x1.00mm
(AWG 17), 50m long
Advice 4x0.34mm
22)
5. Screw the device B (with the design
frame X and the resize window D)
with the screws E to the frame A.
When replacing use any of
the following screws:
PT10 bolcil. hardened and
galvanized steel screw 2.2
x12 PT10
M2.2x 12 cross recess
plan plas-fix45°
local safety
2
2
2
(AWG
EN - 25